It will all depend on wether any coulters need to be in line with bit of steelwork that's crucial to the frame. I didn't want to cut the frame about so accepted some coulters aren't quite where they need to be. If you look closely at my photos it is evident at this time of year but later on it's not.surely the easy solution whilst maintaining good trash flow would be to cut the frame and add in another beam for an additional row ?
I'm going to experiment with 10" first though - i reckon its probably fine for wheat and ideal for OSR
im not planning buggering about cross drilling or RTK'ing between rows - one pass to establish a crop is quite enough !